Transcript Evolution of network management

Network management
Chapter2
Author: J. Richard Burke
Presented by Lin Ming Yuan
IM graduate r92725034
Outline
• Network management enhancement
• Evolution of network management
• History graph
Network management enhancement
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The enhancement of network management includes four major parts:
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Fault management
Capacity management
Resource management
Trending management
Management categories
– SLA (service level management) (ref 19,20)
– Management by policy (ref 21)
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Management approach]
– Web-based approach
– Desktop approach
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Management application
– Data analysis
– Decision making capabilities
– Applications depend on protocols and DBs
Outline
• Network management enhancement
• Evolution of network management
• History graph
Evolution of network management
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OSI reference model
SGMP (simple gateway monitoring protocol)
CMIP (common management information protocol)
SNMP (simple network management protocol)
Network management framework
OSI reference model
• Purposes
– Remote/automated network management
– Protocol architecture/specification/standards
(for coordination and interconnection)
• In 1977, the first ISO model was proposed
in ISO standard 7498-1.
SGMP (simple gateway monitoring protocol)
• The goal of SGMP developers was to minimize the
complexity of software needed for gateway management
and the number of commands to which gateway agents
would have to respond.
• Simple commands for network management
– Get
– Set
• During the development of SGMP, those also continue to
design another protocol for ISO model management. This
approach is called CMOT (CMIP over TCP/IP) and is
contained in the application layer of the ISO protocol stack.
CMIP (common management information protocol)
• CMIP play a similar role to that of SNMP in the
TCP/IP protocol stack.
– Protocol data unit and maps it to a remote operations
service element (ROSE)
– Communication between distributed applications in the
ISO model
• CMIP provides more detailed representation in
MIB object and the ability to create objects and
inherit from other objects. Also 11 commands are
used.
SNMP (simple network management protocol)
• As a result of controversy over the SGMP and CMOT, the
initiator IAB (Internet Activities Boards) finally found that
CMOT is too difficult to be implemented and was
abandoned.
• Then the enhance version of SGMP, called SNMP was
developed. Several participated working group complete
the SNMP protocol. SNMP also has become the important
operational standard for network management of TCP/IPbased network.
• Five command are used to communication and retrieve
information
Network management framework
Network management framework